include/core/lua-int.hpp

   1 #ifndef _lua_int__hpp__included__
   2 #define _lua_int__hpp__included__
   3
   4 #include "lua.hpp"
   5 #include <cstdio>
   6 #include <cstdlib>
   7 extern "C"
   8 {
   9 #include <lua.h>
  10 }
  11
  12 std::string get_string_argument(lua_State* LS, unsigned argindex, const char* fname);
  13 bool get_boolean_argument(lua_State* LS, unsigned argindex, const char* fname);
  14 extern lua_render_context* lua_render_ctx;
  15 extern controller_frame* lua_input_controllerdata;
  16
  17
  18 template<typename T>
  19 T get_numeric_argument(lua_State* LS, unsigned argindex, const char* fname)
  20 {
  21         if(lua_isnone(LS, argindex) || !lua_isnumber(LS, argindex)) {
  22                 char buffer[1024];
  23                 sprintf(buffer, "argument #%i to %s must be numeric", argindex, fname);
  24                 lua_pushstring(LS, buffer);
  25                 lua_error(LS);
  26         }
  27         return static_cast<T>(lua_tonumber(LS, argindex));
  28 }
  29
  30 template<typename T>
  31 void get_numeric_argument(lua_State* LS, unsigned argindex, T& value, const char* fname)
  32 {
  33         if(lua_isnoneornil(LS, argindex))
  34                 return;
  35         if(lua_isnone(LS, argindex) || !lua_isnumber(LS, argindex)) {
  36                 char buffer[1024];
  37                 sprintf(buffer, "argument #%i to %s must be numeric if present", argindex, fname);
  38                 lua_pushstring(LS, buffer);
  39                 lua_error(LS);
  40         }
  41         value = static_cast<T>(lua_tonumber(LS, argindex));
  42 }
  43
  44 #endif